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Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >

Hazardous Weather Conditions

Current conditions at

JEFFERSON CREEK (JEFW1)

Lat: 47.5491°NLon: 123.21759°WElev: 2408.0ft.

NA

37°F

3°C

Humidity 91%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 14 Apr 04:36 AM PDT
Extended Forecast for

12 Miles WNW Brinnon WA

Winter Weather Advisory until April 14, 11:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until April 14, 11:00pm

    NOW until 11:00pm Tue

    Winter Weather Advisory

  • Overnight

    Low: 27 °F

    Chance Snow

  • Tuesday

    Tuesday: Snow, mainly after 7am. The snow could be heavy at times. High near 29. Wind chill values between 14 and 19. Breezy, with a southwest wind 16 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.

    High: 29 °F

    Heavy Snow
    and Breezy

  • Tuesday Night

    Tuesday Night: Snow before 10pm, then a chance of snow after 2am. The snow could be heavy at times. Low around 17. Wind chill values between 6 and 11. West northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 17 °F

    Heavy Snow
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow likely before 11am, then snow showers after 11am. Some thunder is also possible. High near 26. Wind chill values between 8 and 15. West wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 26 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow before 11pm. Partly cloudy, with a low around 19. West wind 9 to 13 mph, with gusts as high as 20 mph. New snow accumulation of around an inch possible.

    Low: 19 °F

    Chance Snow
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

Detailed Forecast

Overnight
A 50 percent chance of snow. Mostly cloudy, with a low around 27. Wind chill values between 17 and 22. West wind around 13 mph, with gusts as high as 20 mph. Total nighttime snow accumulation of less than one inch possible.
Tuesday
Snow, mainly after 7am. The snow could be heavy at times. High near 29. Wind chill values between 14 and 19. Breezy, with a southwest wind 16 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 8 to 12 inches possible.
Tuesday Night
Snow before 10pm, then a chance of snow after 2am. The snow could be heavy at times. Low around 17. Wind chill values between 6 and 11. West northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Snow likely before 11am, then snow showers after 11am. Some thunder is also possible. High near 26. Wind chill values between 8 and 15. West wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
A 50 percent chance of snow before 11pm. Partly cloudy, with a low around 19. West wind 9 to 13 mph, with gusts as high as 20 mph. New snow accumulation of around an inch possible.
Thursday
Sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Partly sunny, with a high near 34.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
Partly sunny, with a high near 40.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 33.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 37.
Sunday Night
Snow likely. Mostly cloudy, with a low around 28.
Monday
Snow likely. Mostly cloudy, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles WNW Brinnon WA
 47.77°N 123.16°W (Elev. 5315 ft)
Last Update:
11:27 pm PDT Apr 13, 2026
Forecast Valid:
4am PDT Apr 14, 2026-6pm PDT Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation